How do you prove #cos^-1 x + tan^-1 x = pi/2#?
This may be true if you meant
Let, Because The upper angle is Also note from the diagram that since we have that Invert the two expressions for Therefore, Note that this proof requires that we use the reference angles when taking inverses, the tan function is periodic so so we could take
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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